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1. 发明专利

DE69521858D1 未知
公开(公告)号：DE69521858D1
公开(公告)日：2001-08-30
申请号：DE69521858
申请日：1995-09-11
申请人： VICTOR COMPANY OF JAPAN
发明人： OZAKI KAZUHISA , KAYANUMA KANJI
IPC分类号： G06F12/14 , G06F1/00 , G06F21/22 , G06F21/24 , G11B20/00 , G11B23/28 , G11B23/36
摘要： An optical disc for a key (14) physically stores first security information (12). The optical disc logically stores second security information ('Maker 3D'). The first security information is equal to security information physically recorded on a legitimate optical disc (10). The second security information is equal to security information logically recorded on the legitimate optical disc.

2. 发明专利

DE69330043T2 未知
公开(公告)号：DE69330043T2
公开(公告)日：2001-07-19
申请号：DE69330043
申请日：1993-10-26
申请人： VICTOR COMPANY OF JAPAN
发明人： SUGIYAMA KENJI , KAYANUMA KANJI , ANDO ICHIRO
IPC分类号： H04N5/926 , H04N7/24 , H04N7/50 , H04N7/52 , H04N7/54 , H04N21/234 , H04N21/2368 , H04N21/434 , H04N21/44 , H04N7/30

3. 发明专利

FR2413749A1 未知
公开(公告)号：FR2413749A1
公开(公告)日：1979-07-27
申请号：FR7836502
申请日：1978-12-27
申请人： VICTOR COMPANY OF JAPAN
发明人： TATSUGUCHI KAZUO , HIRATA ATSUMI , AKASAKA TETSUSHI , KAYANUMA KANJI
IPC分类号： H04N5/7826 , G11B7/085 , G11B21/04 , G11B21/10 , G11B25/04
摘要： The feeding device feeds a reproducing transducer in an apparatus for reproducing signals from a rotary recording medium having an information signal recording track formed thereon in a spiral path or concentric circular form and having reference signals recorded thereon interrelatedly with the information signal track. The reproducing transducer has a reproducing element for reproducing the information signal and the reference signals recorded on the rotary recording medium and tracking control mechanism for accomplishing tracking control so that the reproducing element traces the information signal track. The feeding device comprises a driving motor for driving the reproducing transducer in feeding travel over the rotary recording medium in the radial direction thereof, a circuit for producing a tracking control signal in response to the reference signals reproduced from the reproducing transducer and supplying the tracking control signal to the tracking control mechanism, a circuit for obtaining a DC component signal of the tracking control signal thus produced, and a circuit for controlling the driving operation of the driving motor in response to the DC component signal thus obtained.

4. 发明专利

DE69431225D1 未知
公开(公告)号：DE69431225D1
公开(公告)日：2002-10-02
申请号：DE69431225
申请日：1994-04-11
申请人： VICTOR COMPANY OF JAPAN
发明人： OZAKI KAZUHISA , KAYANUMA KANJI , NAGANO HIROFUMI
IPC分类号： G06F1/00 , G11B7/0037 , G11B7/007 , G11B7/013 , G11B7/26 , G11B20/00 , G11B20/10
摘要： An optical disc on which a number of spiral trains of regular pits and at least one train of irregular pits are formed. The regular pits of each of the trains is arranged symmetrically with respect to the center of a track. Further, each of the irregular pits has a predetermined shape different from a shape of each of the regular pits. Moreover, an arrangement of the train of the irregular pits being differently from an arrangement of each of the trains of the regular pits. Furthermore, a tracking error signal being obtained from the train of the irregular pits. Such an irregular pit can not be copied even when a normal optical disc containing such an irregular pit is copied by performing a conventional copying method. Thus, an illegal copy disc can be discriminated from a normal optical disc by checking whether or not an irregular pit is included in an optical disc. Consequently, a good copy protection can be achieved by easily detecting an illegal copy disc.

5. 发明专利

SG42776A1 Optical disc device for checking optical disc and device for recording information on optical disc 未知
公开(公告)号：SG42776A1
公开(公告)日：1997-10-17
申请号：SG1995001447
申请日：1994-04-11
申请人： VICTOR COMPANY OF JAPAN
发明人： OZAKI KAZUHISA , KAYANUMA KANJI , NAGANO HIROFUMI
IPC分类号： G06F1/00 , G11B7/0037 , G11B7/007 , G11B7/013 , G11B7/26 , G11B20/00 , G11B20/10 , G11B7/00
摘要： An optical disc on which a number of spiral trains of regular pits and at least one train of irregular pits are formed. The regular pits of each of the trains is arranged symmetrically with respect to the center of a track. Further, each of the irregular pits has a predetermined shape different from a shape of each of the regular pits. Moreover, an arrangement of the train of the irregular pits being differently from an arrangement of each of the trains of the regular pits. Furthermore, a tracking error signal being obtained from the train of the irregular pits. Such an irregular pit can not be copied even when a normal optical disc containing such an irregular pit is copied by performing a conventional copying method. Thus, an illegal copy disc can be discriminated from a normal optical disc by checking whether or not an irregular pit is included in an optical disc. Consequently, a good copy protection can be achieved by easily detecting an illegal copy disc.

6. 发明专利

FR2415403A1 未知
公开(公告)号：FR2415403A1
公开(公告)日：1979-08-17
申请号：FR7901366
申请日：1979-01-19
申请人： VICTOR COMPANY OF JAPAN
发明人： HIRATA ATSUMI , KAYANUMA KANJI
IPC分类号： H04N5/903 , G11B9/06 , G11B21/08 , H04N5/76 , H04N5/80
摘要： A special reproducing system is applied to apparatus for reproducing a video signal from a grooveless rotary recording medium. Video signals are recorded along a spiral track with a plural number of fields recorded on every revolution of the medium. The special reproducing system comprises a reproducing element for tracing the track of the rotary recording medium and picking up the recorded signal, a tracking control mechanism for operating in response to skip pulses applied thereto to cause the reproducing element to shift to an adjacent track turn of the spiral track thereby to undergo skipping, and a skip pulse generating circuit for generating skip pulses with timings corresponding to the vertical blanking period positions of the recorded video signal, the skip pulses being of a number corresponding to an operational mode for carrying out a special reproduction differing from normal reproduction at every rotational period of the rotary recording medium, and supplying the skip pulses to the tracking control mechanism. The reproducing element is caused by the tracking control mechanism responsive to the skip pulses to skip to an adjacent track turn within the vertical blanking period of the recorded video signal.

7. 发明专利

FR2409572A1 未知
公开(公告)号：FR2409572A1
公开(公告)日：1979-06-15
申请号：FR7832756
申请日：1978-11-21
申请人： VICTOR COMPANY OF JAPAN
发明人： AKASAKA TETSUSHI , NISIKAWA KAZUNORI , SATO HIDEO , HASHIZUME TERUYOSHI , HANEJI YASUO , KAYANUMA KANJI , ONOYE HIDEO , HIRATA ATSUMI
IPC分类号： G11B21/02 , G11B21/08 , H04N5/76 , G11B21/10

8. 发明专利

DE69431225T2 未知
公开(公告)号：DE69431225T2
公开(公告)日：2003-03-20
申请号：DE69431225
申请日：1994-04-11
申请人： VICTOR COMPANY OF JAPAN
发明人： OZAKI KAZUHISA , KAYANUMA KANJI , NAGANO HIROFUMI
IPC分类号： G06F1/00 , G11B7/0037 , G11B7/007 , G11B7/013 , G11B7/26 , G11B20/00 , G11B20/10
摘要： An optical disc on which a number of spiral trains of regular pits and at least one train of irregular pits are formed. The regular pits of each of the trains is arranged symmetrically with respect to the center of a track. Further, each of the irregular pits has a predetermined shape different from a shape of each of the regular pits. Moreover, an arrangement of the train of the irregular pits being differently from an arrangement of each of the trains of the regular pits. Furthermore, a tracking error signal being obtained from the train of the irregular pits. Such an irregular pit can not be copied even when a normal optical disc containing such an irregular pit is copied by performing a conventional copying method. Thus, an illegal copy disc can be discriminated from a normal optical disc by checking whether or not an irregular pit is included in an optical disc. Consequently, a good copy protection can be achieved by easily detecting an illegal copy disc.

9. 发明专利

HK1000654A1 VARIABLE TRANSFER RATE CONTROL CODING APPARATUS AND METHOD 未知
公开(公告)号：HK1000654A1
公开(公告)日：2001-08-31
申请号：HK97102205
申请日：1997-11-20
申请人： VICTOR COMPANY OF JAPAN
发明人： SUGIYAMA KENJI , KAYANUMA KANJI , ANDO ICHIRO
IPC分类号： H04N5/926 , H04N7/24 , H04N7/50 , H04N7/52 , H04N7/54 , H04N21/234 , H04N21/2368 , H04N21/434 , H04N21/44 , H04N

10. 发明专利

DE2856411A1 未知
公开(公告)号：DE2856411A1
公开(公告)日：1979-07-12
申请号：DE2856411
申请日：1978-12-28
申请人： VICTOR COMPANY OF JAPAN
发明人： TATSUGUCHI KAZUO , HIRATA ATSUMI , AKASAKA TETSUSHI , KAYANUMA KANJI
IPC分类号： H04N5/7826 , G11B7/085 , G11B21/04 , G11B21/10
摘要： The feeding device feeds a reproducing transducer in an apparatus for reproducing signals from a rotary recording medium having an information signal recording track formed thereon in a spiral path or concentric circular form and having reference signals recorded thereon interrelatedly with the information signal track. The reproducing transducer has a reproducing element for reproducing the information signal and the reference signals recorded on the rotary recording medium and tracking control mechanism for accomplishing tracking control so that the reproducing element traces the information signal track. The feeding device comprises a driving motor for driving the reproducing transducer in feeding travel over the rotary recording medium in the radial direction thereof, a circuit for producing a tracking control signal in response to the reference signals reproduced from the reproducing transducer and supplying the tracking control signal to the tracking control mechanism, a circuit for obtaining a DC component signal of the tracking control signal thus produced, and a circuit for controlling the driving operation of the driving motor in response to the DC component signal thus obtained.

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